<template>
  <div class="cesium-viewer-wapper">
    <div id="cesium-viewer" />
    <viewerSettingSidebar top="10em" :viewerSource="viewerSource" />
    <div class="tool-box-top-left">
      <!-- <div class="select-box-wrapper"><select-box :options="flyOptions" style="margin-right: 0;" /></div> -->
      <!--      <div class="select-box-wrapper"><a-checkbox v-model:checked="viewModel.translucencyEnabled">translucencyEnabled</a-checkbox></div>
      <div class="select-box-wrapper"><a-checkbox v-model:checked="viewModel.fadeByDistance">fadeByDistance</a-checkbox></div>
      <div class="select-box-wrapper"><a-checkbox v-model:checked="viewModel.showVectorData">showVectorData</a-checkbox></div> -->
      <div class="select-box-wrapper"><SliderBar v-model:value="height" :min="-1000" :max="1000" :step="10">height</SliderBar></div>
    </div>
    <GlobeRotater showTime :viewerSource="viewerSource" />
    <MousePosition show :viewerSource="viewerSource" />
  </div>
</template>

<script>
import * as Cesium from '@cesiumjs';
import { defineComponent, ref, reactive, watch, toRaw } from 'vue';
import { SelectBox, SliderBar } from '@components/widgets';
import { MousePosition, viewerSettingSidebar, GlobeRotater } from '@g3x/g3v/ui';
import { G3V } from '@g3x';
import { viewerMixin } from '@mixins';
// import merge from '@g3x/utils/merge';

export default defineComponent({
  name: 'churchFarm', //
  mixins: [viewerMixin],
  components: { SelectBox, SliderBar, viewerSettingSidebar, GlobeRotater, MousePosition },
  props: {},
  setup() {
    return {};
  },
  data() {
    return {
      height: 0
    };
  },
  computed: {},
  watch: {},
  methods: {
    g3vOptionsGet(original) {
      // const g3vOptions = merge($g3vOptions, true);
      return original;
    },
    onViewerInited() {
      // console.log('gdp onViewerInited');
    },
    initEffects() {
      const vm = this;
      const { viewer } = vm;
      const scene = viewer.scene;
      const globe = scene.globe;

      var tileset = new Cesium.Cesium3DTileset({
        url: '//zzgis.com/cdn/3d/3dtiles/40866/tileset.json'
      });

      tileset.readyPromise
        .then(function(tileset) {
          scene.primitives.add(tileset);
          viewer.zoomTo(tileset, new Cesium.HeadingPitchRange(0.0, -0.5, tileset.boundingSphere.radius * 2.0));
        })
        .otherwise(function(error) {
          console.error(error);
        });

      watch(()=>vm.height, (height) => {
        height = Number(height);
        if (isNaN(height)) {
          return;
        }
        var cartographic = Cesium.Cartographic.fromCartesian(tileset.boundingSphere.center);
        var surface = Cesium.Cartesian3.fromRadians(cartographic.longitude, cartographic.latitude, 0.0);
        var offset = Cesium.Cartesian3.fromRadians(cartographic.longitude, cartographic.latitude, height);
        var translation = Cesium.Cartesian3.subtract(offset, surface, new Cesium.Cartesian3());
        tileset.modelMatrix = Cesium.Matrix4.fromTranslation(translation);
      });
    }
  }
});
</script>

<style lang="less">
.cesium-viewer-wapper {
  .tool-box-top-left {
    min-width: 15em;
  }
}
</style>
